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Dental preparation instrument having a tool that rotates in an alternately reversible manner

a technology of rotating tools and dental preparation instruments, applied in dental surgery, medical science, nerve needles, etc., can solve the problem that handpieces cannot be used in existing dental workplaces, and achieve the effect of avoiding additional components

Active Publication Date: 2017-08-29
DENTSPLY SIRONA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables the use of dental preparation instruments with conventional fully rotational motor control systems, ensuring compatibility and functionality in existing dental workplaces.

Problems solved by technology

The disadvantage is that the handpiece requires a motor with special electronics, and the handpiece therefore cannot be used in existing dental workplaces with an existing motor control for a conventional, fully rotational motor.

Method used

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  • Dental preparation instrument having a tool that rotates in an alternately reversible manner
  • Dental preparation instrument having a tool that rotates in an alternately reversible manner
  • Dental preparation instrument having a tool that rotates in an alternately reversible manner

Examples

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Embodiment Construction

[0028]FIG. 1 schematically portrays a dental preparation instrument 1 comprising a drive in the form of a motor 2 and an angle piece 3, wherein a connecting piece 4 with a gearing 43 is placed between the motor 2 and the angle piece 3. The motor 2 is connected to a hose (not shown) through which supply lines are guided, for example, to ensure electrical supply to the motor, but also possibly to provide media such as light, water or air.

[0029]The angle piece 3 has a head 5 in which a tool 6 is rotatably mounted. The rotational motion of the motor 2 depicted by the arrow 7 is transmitted to the connecting piece 4 and is converted into an alternately reversing rotational motion designated by the double arrow 8 by the gearing G placed there which is also provided with reference number 43. This alternately reversing rotational motion is transmitted by the angle piece 3 to the tool 6.

[0030]FIG. 2 shows a dental preparation instrument 11, wherein the gearing 43 is integrated in the angle p...

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Abstract

The invention relates to a dental preparation instrument that includes a tool that rotates in an alternately reversible manner. The preparation instrument has a drive for the tool. The drive provides a continuous fully rotational motion, and a gearing is arranged before the tool. Said gearing converts the continuous fully rotational motion of the drive into an alternately reversing rotational motion, which is continuous as viewed over several reversals.

Description

FIELD OF THE INVENTION[0001]The invention relates to a dental preparation instrument, comprising a reversibly rotating tool that is, for example, used in the treatment of root canals. The preparation instrument has a drive for the tool.BACKGROUND OF THE INVENTION[0002]A rotating handpiece for endodontics is known from EP 1 196 109 B1, wherein a file is rotated such that it rotates across a first angular range in a first direction for cutting or smoothing, and rotates over a second angular range opposite the first direction to remove the abraded material, wherein the first angular range is greater than the second angular range and lies within a range of 90-180° and 45-120°, respectively.[0003]It is known from EP 2 438 884 A1 that the angular range for cutting or smoothing is less than the elastic torsion angle of the tool, and that the angular range for cutting or smoothing is 3 to 20 times greater than the angular range for removal.[0004]A motor is used in each case that has a rever...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61C1/06A61C1/18A61C1/12A61C1/02A61C5/40
CPCA61C1/186A61C1/02A61C1/12A61C1/185A61C1/06A61C5/40
Inventor BIERBAUM, THOMASLAUFFER, ADELBERT
Owner DENTSPLY SIRONA INC